afaik the ad ons for the 500 which I had one(vortex at-once plus 286) at one point was for 286 compatible software and it was capable of installing ms-dos (9.11) or what ever, also the old radioshack/tandy comp Os.
it did flicker abit as it ran hot and eventually locked up the system from overheating
pc-task 4.x was a better solution but being software based, it was slow and needed at least a 030, I never got it going on my 1200T 060, as it wouldn't default to my drive for whatever reason, but i did install win95 on my sx-32pro 030 which ran sloooow, but did do win applications, and could boot some games, again slooow
